CompilerInvocation.cpp revision 203955 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Driver/Arg.h"
14#include "clang/Driver/ArgList.h"
15#include "clang/Driver/CC1Options.h"
16#include "clang/Driver/DriverDiagnostic.h"
17#include "clang/Driver/OptTable.h"
18#include "clang/Driver/Option.h"
19#include "clang/Frontend/CompilerInvocation.h"
20#include "clang/Frontend/LangStandard.h"
21#include "clang/Frontend/PCHReader.h"
22#include "llvm/ADT/OwningPtr.h"
23#include "llvm/ADT/SmallVector.h"
24#include "llvm/ADT/StringExtras.h"
25#include "llvm/ADT/StringSwitch.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/System/Host.h"
28#include "llvm/System/Path.h"
29using namespace clang;
30
31static const char *getAnalysisName(Analyses Kind) {
32  switch (Kind) {
33  default:
34    llvm_unreachable("Unknown analysis kind!");
35#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36  case NAME: return "-" CMDFLAG;
37#include "clang/Frontend/Analyses.def"
38  }
39}
40
41static const char *getAnalysisStoreName(AnalysisStores Kind) {
42  switch (Kind) {
43  default:
44    llvm_unreachable("Unknown analysis store!");
45#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46  case NAME##Model: return CMDFLAG;
47#include "clang/Frontend/Analyses.def"
48  }
49}
50
51static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52  switch (Kind) {
53  default:
54    llvm_unreachable("Unknown analysis constraints!");
55#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56  case NAME##Model: return CMDFLAG;
57#include "clang/Frontend/Analyses.def"
58  }
59}
60
61static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62  switch (Kind) {
63  default:
64    llvm_unreachable("Unknown analysis client!");
65#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66  case PD_##NAME: return CMDFLAG;
67#include "clang/Frontend/Analyses.def"
68  }
69}
70
71//===----------------------------------------------------------------------===//
72// Serialization (to args)
73//===----------------------------------------------------------------------===//
74
75static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                               std::vector<std::string> &Res) {
77  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80    Res.push_back("-analyzer-store");
81    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82  }
83  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84    Res.push_back("-analyzer-constraints");
85    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86  }
87  if (Opts.AnalysisDiagOpt != PD_HTML) {
88    Res.push_back("-analyzer-output");
89    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90  }
91  if (!Opts.AnalyzeSpecificFunction.empty()) {
92    Res.push_back("-analyze-function");
93    Res.push_back(Opts.AnalyzeSpecificFunction);
94  }
95  if (Opts.AnalyzeAll)
96    Res.push_back("-analyzer-opt-analyze-headers");
97  if (Opts.AnalyzerDisplayProgress)
98    Res.push_back("-analyzer-display-progress");
99  if (Opts.AnalyzeNestedBlocks)
100    Res.push_back("-analyzer-opt-analyze-nested-blocks");
101  if (Opts.EagerlyAssume)
102    Res.push_back("-analyzer-eagerly-assume");
103  if (!Opts.PurgeDead)
104    Res.push_back("-analyzer-no-purge-dead");
105  if (Opts.TrimGraph)
106    Res.push_back("-trim-egraph");
107  if (Opts.VisualizeEGDot)
108    Res.push_back("-analyzer-viz-egraph-graphviz");
109  if (Opts.VisualizeEGDot)
110    Res.push_back("-analyzer-viz-egraph-ubigraph");
111  if (Opts.EnableExperimentalChecks)
112    Res.push_back("-analyzer-experimental-checks");
113  if (Opts.EnableExperimentalInternalChecks)
114    Res.push_back("-analyzer-experimental-internal-checks");
115}
116
117static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                              std::vector<std::string> &Res) {
119  if (Opts.DebugInfo)
120    Res.push_back("-g");
121  if (Opts.DisableLLVMOpts)
122    Res.push_back("-disable-llvm-optzns");
123  if (Opts.DisableRedZone)
124    Res.push_back("-disable-red-zone");
125  if (!Opts.DwarfDebugFlags.empty()) {
126    Res.push_back("-dwarf-debug-flags");
127    Res.push_back(Opts.DwarfDebugFlags);
128  }
129  if (!Opts.MergeAllConstants)
130    Res.push_back("-fno-merge-all-constants");
131  if (Opts.NoCommon)
132    Res.push_back("-fno-common");
133  if (Opts.NoImplicitFloat)
134    Res.push_back("-no-implicit-float");
135  if (Opts.OptimizeSize) {
136    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137    Res.push_back("-Os");
138  } else if (Opts.OptimizationLevel != 0)
139    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140  if (!Opts.MainFileName.empty()) {
141    Res.push_back("-main-file-name");
142    Res.push_back(Opts.MainFileName);
143  }
144  // SimplifyLibCalls is only derived.
145  // TimePasses is only derived.
146  // UnitAtATime is unused.
147  // UnrollLoops is only derived.
148  // VerifyModule is only derived.
149  // Inlining is only derived.
150
151  if (Opts.AsmVerbose)
152    Res.push_back("-masm-verbose");
153  if (!Opts.CodeModel.empty()) {
154    Res.push_back("-mcode-model");
155    Res.push_back(Opts.CodeModel);
156  }
157  if (!Opts.DebugPass.empty()) {
158    Res.push_back("-mdebug-pass");
159    Res.push_back(Opts.DebugPass);
160  }
161  if (Opts.DisableFPElim)
162    Res.push_back("-mdisable-fp-elim");
163  if (!Opts.FloatABI.empty()) {
164    Res.push_back("-mfloat-abi");
165    Res.push_back(Opts.FloatABI);
166  }
167  if (!Opts.LimitFloatPrecision.empty()) {
168    Res.push_back("-mlimit-float-precision");
169    Res.push_back(Opts.LimitFloatPrecision);
170  }
171  if (Opts.NoZeroInitializedInBSS)
172    Res.push_back("-mno-zero-initialized-bss");
173  if (Opts.ObjCLegacyDispatch)
174    Res.push_back("-fobjc-legacy-dispatch");
175  if (Opts.SoftFloat)
176    Res.push_back("-msoft-float");
177  if (Opts.UnwindTables)
178    Res.push_back("-munwind-tables");
179  if (Opts.RelocationModel != "pic") {
180    Res.push_back("-mrelocation-model");
181    Res.push_back(Opts.RelocationModel);
182  }
183  if (!Opts.VerifyModule)
184    Res.push_back("-disable-llvm-verifier");
185}
186
187static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
188                                       std::vector<std::string> &Res) {
189  if (Opts.IncludeSystemHeaders)
190    Res.push_back("-sys-header-deps");
191  if (Opts.UsePhonyTargets)
192    Res.push_back("-MP");
193  if (!Opts.OutputFile.empty()) {
194    Res.push_back("-dependency-file");
195    Res.push_back(Opts.OutputFile);
196  }
197  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
198    Res.push_back("-MT");
199    Res.push_back(Opts.Targets[i]);
200  }
201}
202
203static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
204                                 std::vector<std::string> &Res) {
205  if (Opts.IgnoreWarnings)
206    Res.push_back("-w");
207  if (Opts.NoRewriteMacros)
208    Res.push_back("-Wno-rewrite-macros");
209  if (Opts.Pedantic)
210    Res.push_back("-pedantic");
211  if (Opts.PedanticErrors)
212    Res.push_back("-pedantic-errors");
213  if (!Opts.ShowColumn)
214    Res.push_back("-fno-show-column");
215  if (!Opts.ShowLocation)
216    Res.push_back("-fno-show-source-location");
217  if (!Opts.ShowCarets)
218    Res.push_back("-fno-caret-diagnostics");
219  if (!Opts.ShowFixits)
220    Res.push_back("-fno-diagnostics-fixit-info");
221  if (Opts.ShowSourceRanges)
222    Res.push_back("-fdiagnostics-print-source-range-info");
223  if (Opts.ShowColors)
224    Res.push_back("-fcolor-diagnostics");
225  if (Opts.VerifyDiagnostics)
226    Res.push_back("-verify");
227  if (Opts.BinaryOutput)
228    Res.push_back("-fdiagnostics-binary");
229  if (Opts.ShowOptionNames)
230    Res.push_back("-fdiagnostics-show-option");
231  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
232    Res.push_back("-ftabstop");
233    Res.push_back(llvm::utostr(Opts.TabStop));
234  }
235  if (Opts.MessageLength) {
236    Res.push_back("-fmessage-length");
237    Res.push_back(llvm::utostr(Opts.MessageLength));
238  }
239  if (!Opts.DumpBuildInformation.empty()) {
240    Res.push_back("-dump-build-information");
241    Res.push_back(Opts.DumpBuildInformation);
242  }
243  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
244    Res.push_back("-W" + Opts.Warnings[i]);
245}
246
247static const char *getInputKindName(FrontendOptions::InputKind Kind) {
248  switch (Kind) {
249  case FrontendOptions::IK_None:              break;
250  case FrontendOptions::IK_AST:               return "ast";
251  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
252  case FrontendOptions::IK_C:                 return "c";
253  case FrontendOptions::IK_CXX:               return "c++";
254  case FrontendOptions::IK_ObjC:              return "objective-c";
255  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
256  case FrontendOptions::IK_OpenCL:            return "cl";
257  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
258  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
259  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
260  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
261  }
262
263  llvm_unreachable("Unexpected language kind!");
264  return 0;
265}
266
267static const char *getActionName(frontend::ActionKind Kind) {
268  switch (Kind) {
269  case frontend::PluginAction:
270  case frontend::InheritanceView:
271    llvm_unreachable("Invalid kind!");
272
273  case frontend::ASTDump:                return "-ast-dump";
274  case frontend::ASTPrint:               return "-ast-print";
275  case frontend::ASTPrintXML:            return "-ast-print-xml";
276  case frontend::ASTView:                return "-ast-view";
277  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
278  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
279  case frontend::DumpTokens:             return "-dump-tokens";
280  case frontend::EmitAssembly:           return "-S";
281  case frontend::EmitBC:                 return "-emit-llvm-bc";
282  case frontend::EmitHTML:               return "-emit-html";
283  case frontend::EmitLLVM:               return "-emit-llvm";
284  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
285  case frontend::EmitObj:                return "-emit-obj";
286  case frontend::FixIt:                  return "-fixit";
287  case frontend::GeneratePCH:            return "-emit-pch";
288  case frontend::GeneratePTH:            return "-emit-pth";
289  case frontend::ParseNoop:              return "-parse-noop";
290  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
291  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
292  case frontend::PrintDeclContext:       return "-print-decl-contexts";
293  case frontend::PrintPreprocessedInput: return "-E";
294  case frontend::RewriteMacros:          return "-rewrite-macros";
295  case frontend::RewriteObjC:            return "-rewrite-objc";
296  case frontend::RewriteTest:            return "-rewrite-test";
297  case frontend::RunAnalysis:            return "-analyze";
298  case frontend::RunPreprocessorOnly:    return "-Eonly";
299  }
300
301  llvm_unreachable("Unexpected language kind!");
302  return 0;
303}
304
305static void FrontendOptsToArgs(const FrontendOptions &Opts,
306                               std::vector<std::string> &Res) {
307  if (!Opts.DebugCodeCompletionPrinter)
308    Res.push_back("-no-code-completion-debug-printer");
309  if (Opts.DisableFree)
310    Res.push_back("-disable-free");
311  if (Opts.EmptyInputOnly)
312    Res.push_back("-empty-input-only");
313  if (Opts.RelocatablePCH)
314    Res.push_back("-relocatable-pch");
315  if (Opts.ShowHelp)
316    Res.push_back("-help");
317  if (Opts.ShowMacrosInCodeCompletion)
318    Res.push_back("-code-completion-macros");
319  if (Opts.ShowStats)
320    Res.push_back("-print-stats");
321  if (Opts.ShowTimers)
322    Res.push_back("-ftime-report");
323  if (Opts.ShowVersion)
324    Res.push_back("-version");
325
326  bool NeedLang = false;
327  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
328    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
329        Opts.Inputs[i].first)
330      NeedLang = true;
331  if (NeedLang) {
332    Res.push_back("-x");
333    Res.push_back(getInputKindName(Opts.Inputs[0].first));
334  }
335  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
336    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
337           "Unable to represent this input vector!");
338    Res.push_back(Opts.Inputs[i].second);
339  }
340
341  if (!Opts.OutputFile.empty()) {
342    Res.push_back("-o");
343    Res.push_back(Opts.OutputFile);
344  }
345  if (!Opts.ViewClassInheritance.empty()) {
346    Res.push_back("-cxx-inheritance-view");
347    Res.push_back(Opts.ViewClassInheritance);
348  }
349  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
350    Res.push_back("-fixit-at");
351    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
352                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
353                  llvm::utostr(Opts.FixItLocations[i].Column));
354  }
355  if (!Opts.CodeCompletionAt.FileName.empty()) {
356    Res.push_back("-code-completion-at");
357    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
358                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
359                  llvm::utostr(Opts.CodeCompletionAt.Column));
360  }
361  if (Opts.ProgramAction != frontend::InheritanceView &&
362      Opts.ProgramAction != frontend::PluginAction)
363    Res.push_back(getActionName(Opts.ProgramAction));
364  if (!Opts.ActionName.empty()) {
365    Res.push_back("-plugin");
366    Res.push_back(Opts.ActionName);
367  }
368  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
369    Res.push_back("-load");
370    Res.push_back(Opts.Plugins[i]);
371  }
372  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
373    Res.push_back("-ast-merge");
374    Res.push_back(Opts.ASTMergeFiles[i]);
375  }
376}
377
378static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
379                                   std::vector<std::string> &Res) {
380  if (Opts.Sysroot != "/") {
381    Res.push_back("-isysroot");
382    Res.push_back(Opts.Sysroot);
383  }
384
385  /// User specified include entries.
386  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
387    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
388    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
389      llvm::llvm_report_error("Invalid option set!");
390    if (E.IsUserSupplied) {
391      if (E.Group == frontend::After) {
392        Res.push_back("-idirafter");
393      } else if (E.Group == frontend::Quoted) {
394        Res.push_back("-iquote");
395      } else if (E.Group == frontend::System) {
396        Res.push_back("-isystem");
397      } else {
398        assert(E.Group == frontend::Angled && "Invalid group!");
399        Res.push_back(E.IsFramework ? "-F" : "-I");
400      }
401    } else {
402      if (E.Group != frontend::Angled && E.Group != frontend::System)
403        llvm::llvm_report_error("Invalid option set!");
404      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
405                    "-iwithprefix");
406    }
407    Res.push_back(E.Path);
408  }
409
410  if (!Opts.EnvIncPath.empty()) {
411    // FIXME: Provide an option for this, and move env detection to driver.
412    llvm::llvm_report_error("Not yet implemented!");
413  }
414  if (!Opts.CEnvIncPath.empty()) {
415    // FIXME: Provide an option for this, and move env detection to driver.
416    llvm::llvm_report_error("Not yet implemented!");
417  }
418  if (!Opts.ObjCEnvIncPath.empty()) {
419    // FIXME: Provide an option for this, and move env detection to driver.
420    llvm::llvm_report_error("Not yet implemented!");
421  }
422  if (!Opts.CXXEnvIncPath.empty()) {
423    // FIXME: Provide an option for this, and move env detection to driver.
424    llvm::llvm_report_error("Not yet implemented!");
425  }
426  if (!Opts.ObjCXXEnvIncPath.empty()) {
427    // FIXME: Provide an option for this, and move env detection to driver.
428    llvm::llvm_report_error("Not yet implemented!");
429  }
430  if (!Opts.ResourceDir.empty()) {
431    Res.push_back("-resource-dir");
432    Res.push_back(Opts.ResourceDir);
433  }
434  if (!Opts.UseStandardIncludes)
435    Res.push_back("-nostdinc");
436  if (Opts.Verbose)
437    Res.push_back("-v");
438}
439
440static void LangOptsToArgs(const LangOptions &Opts,
441                           std::vector<std::string> &Res) {
442  LangOptions DefaultLangOpts;
443
444  // FIXME: Need to set -std to get all the implicit options.
445
446  // FIXME: We want to only pass options relative to the defaults, which
447  // requires constructing a target. :(
448  //
449  // It would be better to push the all target specific choices into the driver,
450  // so that everything below that was more uniform.
451
452  if (Opts.Trigraphs)
453    Res.push_back("-trigraphs");
454  // Implicit based on the input kind:
455  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
456  // Implicit based on the input language standard:
457  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
458  if (Opts.DollarIdents)
459    Res.push_back("-fdollars-in-identifiers");
460  if (Opts.Microsoft)
461    Res.push_back("-fms-extensions");
462  if (Opts.ObjCNonFragileABI)
463    Res.push_back("-fobjc-nonfragile-abi");
464  if (Opts.ObjCNonFragileABI2)
465    Res.push_back("-fobjc-nonfragile-abi2");
466  // NoInline is implicit.
467  if (!Opts.CXXOperatorNames)
468    Res.push_back("-fno-operator-names");
469  if (Opts.PascalStrings)
470    Res.push_back("-fpascal-strings");
471  if (Opts.CatchUndefined)
472    Res.push_back("-fcatch-undefined-behavior");
473  if (Opts.WritableStrings)
474    Res.push_back("-fwritable-strings");
475  if (!Opts.LaxVectorConversions)
476    Res.push_back("-fno-lax-vector-conversions");
477  if (Opts.AltiVec)
478    Res.push_back("-faltivec");
479  if (Opts.Exceptions)
480    Res.push_back("-fexceptions");
481  if (Opts.SjLjExceptions)
482    Res.push_back("-fsjlj-exceptions");
483  if (!Opts.RTTI)
484    Res.push_back("-fno-rtti");
485  if (!Opts.NeXTRuntime)
486    Res.push_back("-fgnu-runtime");
487  if (Opts.Freestanding)
488    Res.push_back("-ffreestanding");
489  if (Opts.NoBuiltin)
490    Res.push_back("-fno-builtin");
491  if (!Opts.AssumeSaneOperatorNew)
492    Res.push_back("-fno-assume-sane-operator-new");
493  if (!Opts.ThreadsafeStatics)
494    Res.push_back("-fno-threadsafe-statics");
495  if (Opts.POSIXThreads)
496    Res.push_back("-pthread");
497  if (Opts.Blocks)
498    Res.push_back("-fblocks");
499  if (Opts.EmitAllDecls)
500    Res.push_back("-femit-all-decls");
501  if (Opts.MathErrno)
502    Res.push_back("-fmath-errno");
503  if (Opts.OverflowChecking)
504    Res.push_back("-ftrapv");
505  if (Opts.HeinousExtensions)
506    Res.push_back("-fheinous-gnu-extensions");
507  // Optimize is implicit.
508  // OptimizeSize is implicit.
509  if (Opts.Static)
510    Res.push_back("-static-define");
511  if (Opts.PICLevel) {
512    Res.push_back("-pic-level");
513    Res.push_back(llvm::utostr(Opts.PICLevel));
514  }
515  if (Opts.ObjCGCBitmapPrint)
516    Res.push_back("-print-ivar-layout");
517  // FIXME: Don't forget to update when the default changes!
518  if (Opts.AccessControl)
519    Res.push_back("-faccess-control");
520  if (!Opts.CharIsSigned)
521    Res.push_back("-fno-signed-char");
522  if (Opts.ShortWChar)
523    Res.push_back("-fshort-wchar");
524  if (!Opts.ElideConstructors)
525    Res.push_back("-fno-elide-constructors");
526  if (Opts.getGCMode() != LangOptions::NonGC) {
527    if (Opts.getGCMode() == LangOptions::HybridGC) {
528      Res.push_back("-fobjc-gc");
529    } else {
530      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
531      Res.push_back("-fobjc-gc-only");
532    }
533  }
534  if (Opts.getVisibilityMode() != LangOptions::Default) {
535    Res.push_back("-fvisibility");
536    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
537      Res.push_back("hidden");
538    } else {
539      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
540             "Invalid visibility!");
541      Res.push_back("protected");
542    }
543  }
544  if (Opts.getStackProtectorMode() != 0) {
545    Res.push_back("-stack-protector");
546    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
547  }
548  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
549    Res.push_back("-ftemplate-depth");
550    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
551  }
552  if (!Opts.ObjCConstantStringClass.empty()) {
553    Res.push_back("-fconstant-string-class");
554    Res.push_back(Opts.ObjCConstantStringClass);
555  }
556}
557
558static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
559                                   std::vector<std::string> &Res) {
560  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
561    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
562                  Opts.Macros[i].first);
563  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
564    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
565    Res.push_back("-include");
566    Res.push_back(Opts.Includes[i]);
567  }
568  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
569    Res.push_back("-imacros");
570    Res.push_back(Opts.MacroIncludes[i]);
571  }
572  if (!Opts.UsePredefines)
573    Res.push_back("-undef");
574  if (!Opts.ImplicitPCHInclude.empty()) {
575    Res.push_back("-include-pch");
576    Res.push_back(Opts.ImplicitPCHInclude);
577  }
578  if (!Opts.ImplicitPTHInclude.empty()) {
579    Res.push_back("-include-pth");
580    Res.push_back(Opts.ImplicitPTHInclude);
581  }
582  if (!Opts.TokenCache.empty()) {
583    if (Opts.ImplicitPTHInclude.empty()) {
584      Res.push_back("-token-cache");
585      Res.push_back(Opts.TokenCache);
586    } else
587      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
588             "Unsupported option combination!");
589  }
590  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
591    Res.push_back("-remap-file");
592    Res.push_back(Opts.RemappedFiles[i].first + ";" +
593                  Opts.RemappedFiles[i].second);
594  }
595}
596
597static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
598                                         std::vector<std::string> &Res) {
599  if (!Opts.ShowCPP && !Opts.ShowMacros)
600    llvm::llvm_report_error("Invalid option combination!");
601
602  if (Opts.ShowCPP && Opts.ShowMacros)
603    Res.push_back("-dD");
604  else if (!Opts.ShowCPP && Opts.ShowMacros)
605    Res.push_back("-dM");
606
607  if (!Opts.ShowLineMarkers)
608    Res.push_back("-P");
609  if (Opts.ShowComments)
610    Res.push_back("-C");
611  if (Opts.ShowMacroComments)
612    Res.push_back("-CC");
613}
614
615static void TargetOptsToArgs(const TargetOptions &Opts,
616                             std::vector<std::string> &Res) {
617  Res.push_back("-triple");
618  Res.push_back(Opts.Triple);
619  if (!Opts.CPU.empty()) {
620    Res.push_back("-target-cpu");
621    Res.push_back(Opts.CPU);
622  }
623  if (!Opts.ABI.empty()) {
624    Res.push_back("-target-abi");
625    Res.push_back(Opts.ABI);
626  }
627  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
628    Res.push_back("-target-feature");
629    Res.push_back(Opts.Features[i]);
630  }
631}
632
633void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
634  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
635  CodeGenOptsToArgs(getCodeGenOpts(), Res);
636  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
637  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
638  FrontendOptsToArgs(getFrontendOpts(), Res);
639  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
640  LangOptsToArgs(getLangOpts(), Res);
641  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
642  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
643  TargetOptsToArgs(getTargetOpts(), Res);
644}
645
646//===----------------------------------------------------------------------===//
647// Deserialization (to args)
648//===----------------------------------------------------------------------===//
649
650using namespace clang::driver;
651using namespace clang::driver::cc1options;
652
653static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
654                                       llvm::StringRef Default = "") {
655  if (Arg *A = Args.getLastArg(ID))
656    return A->getValue(Args);
657  return Default;
658}
659
660static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
661                              int Default, Diagnostic &Diags) {
662  Arg *A = Args.getLastArg(ID);
663  if (!A)
664    return Default;
665
666  int Res = Default;
667  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
668    Diags.Report(diag::err_drv_invalid_int_value)
669        << A->getAsString(Args) << A->getValue(Args);
670
671  return Res;
672}
673
674static std::vector<std::string>
675getAllArgValues(ArgList &Args, cc1options::ID ID) {
676  llvm::SmallVector<const char *, 16> Values;
677  Args.AddAllArgValues(Values, ID);
678  return std::vector<std::string>(Values.begin(), Values.end());
679}
680
681//
682
683static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
684                              Diagnostic &Diags) {
685  using namespace cc1options;
686
687  Opts.AnalysisList.clear();
688#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
689  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
690#include "clang/Frontend/Analyses.def"
691
692  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
693    llvm::StringRef Name = A->getValue(Args);
694    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
695#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
696      .Case(CMDFLAG, NAME##Model)
697#include "clang/Frontend/Analyses.def"
698      .Default(NumStores);
699    // FIXME: Error handling.
700    if (Value == NumStores)
701      Diags.Report(diag::err_drv_invalid_value)
702        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
703    else
704      Opts.AnalysisStoreOpt = Value;
705  }
706
707  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
708    llvm::StringRef Name = A->getValue(Args);
709    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
710#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
711      .Case(CMDFLAG, NAME##Model)
712#include "clang/Frontend/Analyses.def"
713      .Default(NumConstraints);
714    // FIXME: Error handling.
715    if (Value == NumConstraints)
716      Diags.Report(diag::err_drv_invalid_value)
717        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
718    else
719      Opts.AnalysisConstraintsOpt = Value;
720  }
721
722  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
723    llvm::StringRef Name = A->getValue(Args);
724    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
725#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
726      .Case(CMDFLAG, PD_##NAME)
727#include "clang/Frontend/Analyses.def"
728      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
729    // FIXME: Error handling.
730    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
731      Diags.Report(diag::err_drv_invalid_value)
732        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
733    else
734      Opts.AnalysisDiagOpt = Value;
735  }
736
737  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
738  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
739  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
740  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
741  Opts.AnalyzeNestedBlocks =
742    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
743  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
744  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
745  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
746  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
747  Opts.EnableExperimentalInternalChecks =
748    Args.hasArg(OPT_analyzer_experimental_internal_checks);
749  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
750}
751
752static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
753                             Diagnostic &Diags) {
754  using namespace cc1options;
755  // -Os implies -O2
756  if (Args.hasArg(OPT_Os))
757    Opts.OptimizationLevel = 2;
758  else {
759    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
760    if (Opts.OptimizationLevel > 3) {
761      Diags.Report(diag::err_drv_invalid_value)
762        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
763      Opts.OptimizationLevel = 3;
764    }
765  }
766
767  // We must always run at least the always inlining pass.
768  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
769    : CodeGenOptions::OnlyAlwaysInlining;
770
771  Opts.DebugInfo = Args.hasArg(OPT_g);
772  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
773  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
774  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
775  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
776  Opts.NoCommon = Args.hasArg(OPT_fno_common);
777  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
778  Opts.OptimizeSize = Args.hasArg(OPT_Os);
779  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
780
781  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
782  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
783  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
784  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
785  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
786  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
787  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
788  Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
789  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
790  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
791  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
792
793  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
794  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
795}
796
797static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
798                                      ArgList &Args) {
799  using namespace cc1options;
800  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
801  Opts.Targets = getAllArgValues(Args, OPT_MT);
802  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
803  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
804}
805
806static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
807                                Diagnostic &Diags) {
808  using namespace cc1options;
809  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
810  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
811  Opts.Pedantic = Args.hasArg(OPT_pedantic);
812  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
813  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
814  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
815  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
816  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
817  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
818  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
819  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
820  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
821  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
822  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
823                                    DiagnosticOptions::DefaultTabStop, Diags);
824  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
825    Diags.Report(diag::warn_ignoring_ftabstop_value)
826      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
827    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
828  }
829  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
830  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
831  Opts.Warnings = getAllArgValues(Args, OPT_W);
832}
833
834static FrontendOptions::InputKind
835ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
836  using namespace cc1options;
837  Opts.ProgramAction = frontend::ParseSyntaxOnly;
838  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
839    switch (A->getOption().getID()) {
840    default:
841      assert(0 && "Invalid option in group!");
842    case OPT_ast_dump:
843      Opts.ProgramAction = frontend::ASTDump; break;
844    case OPT_ast_print:
845      Opts.ProgramAction = frontend::ASTPrint; break;
846    case OPT_ast_print_xml:
847      Opts.ProgramAction = frontend::ASTPrintXML; break;
848    case OPT_ast_view:
849      Opts.ProgramAction = frontend::ASTView; break;
850    case OPT_dump_raw_tokens:
851      Opts.ProgramAction = frontend::DumpRawTokens; break;
852    case OPT_dump_record_layouts:
853      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
854    case OPT_dump_tokens:
855      Opts.ProgramAction = frontend::DumpTokens; break;
856    case OPT_S:
857      Opts.ProgramAction = frontend::EmitAssembly; break;
858    case OPT_emit_llvm_bc:
859      Opts.ProgramAction = frontend::EmitBC; break;
860    case OPT_emit_html:
861      Opts.ProgramAction = frontend::EmitHTML; break;
862    case OPT_emit_llvm:
863      Opts.ProgramAction = frontend::EmitLLVM; break;
864    case OPT_emit_llvm_only:
865      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
866    case OPT_emit_obj:
867      Opts.ProgramAction = frontend::EmitObj; break;
868    case OPT_fixit:
869      Opts.ProgramAction = frontend::FixIt; break;
870    case OPT_emit_pch:
871      Opts.ProgramAction = frontend::GeneratePCH; break;
872    case OPT_emit_pth:
873      Opts.ProgramAction = frontend::GeneratePTH; break;
874    case OPT_parse_noop:
875      Opts.ProgramAction = frontend::ParseNoop; break;
876    case OPT_parse_print_callbacks:
877      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
878    case OPT_fsyntax_only:
879      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
880    case OPT_print_decl_contexts:
881      Opts.ProgramAction = frontend::PrintDeclContext; break;
882    case OPT_E:
883      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
884    case OPT_rewrite_macros:
885      Opts.ProgramAction = frontend::RewriteMacros; break;
886    case OPT_rewrite_objc:
887      Opts.ProgramAction = frontend::RewriteObjC; break;
888    case OPT_rewrite_test:
889      Opts.ProgramAction = frontend::RewriteTest; break;
890    case OPT_analyze:
891      Opts.ProgramAction = frontend::RunAnalysis; break;
892    case OPT_Eonly:
893      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
894    }
895  }
896  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
897    Opts.ProgramAction = frontend::PluginAction;
898    Opts.ActionName = A->getValue(Args);
899  }
900
901  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
902    Opts.CodeCompletionAt =
903      ParsedSourceLocation::FromString(A->getValue(Args));
904    if (Opts.CodeCompletionAt.FileName.empty())
905      Diags.Report(diag::err_drv_invalid_value)
906        << A->getAsString(Args) << A->getValue(Args);
907  }
908  Opts.DebugCodeCompletionPrinter =
909    !Args.hasArg(OPT_no_code_completion_debug_printer);
910  Opts.DisableFree = Args.hasArg(OPT_disable_free);
911  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
912
913  Opts.FixItLocations.clear();
914  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
915         ie = Args.filtered_end(); it != ie; ++it) {
916    const char *Loc = it->getValue(Args);
917    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
918
919    if (PSL.FileName.empty()) {
920      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
921      continue;
922    }
923
924    Opts.FixItLocations.push_back(PSL);
925  }
926
927  Opts.OutputFile = getLastArgValue(Args, OPT_o);
928  Opts.Plugins = getAllArgValues(Args, OPT_load);
929  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
930  Opts.ShowHelp = Args.hasArg(OPT_help);
931  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
932  Opts.ShowStats = Args.hasArg(OPT_print_stats);
933  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
934  Opts.ShowVersion = Args.hasArg(OPT_version);
935  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
936  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
937
938  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
939  if (const Arg *A = Args.getLastArg(OPT_x)) {
940    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
941      .Case("c", FrontendOptions::IK_C)
942      .Case("cl", FrontendOptions::IK_OpenCL)
943      .Case("c", FrontendOptions::IK_C)
944      .Case("cl", FrontendOptions::IK_OpenCL)
945      .Case("c++", FrontendOptions::IK_CXX)
946      .Case("objective-c", FrontendOptions::IK_ObjC)
947      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
948      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
949      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
950      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
951      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
952      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
953      .Case("c-header", FrontendOptions::IK_C)
954      .Case("objective-c-header", FrontendOptions::IK_ObjC)
955      .Case("c++-header", FrontendOptions::IK_CXX)
956      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
957      .Case("ast", FrontendOptions::IK_AST)
958      .Default(FrontendOptions::IK_None);
959    if (DashX == FrontendOptions::IK_None)
960      Diags.Report(diag::err_drv_invalid_value)
961        << A->getAsString(Args) << A->getValue(Args);
962  }
963
964  // '-' is the default input if none is given.
965  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
966  Opts.Inputs.clear();
967  if (Inputs.empty())
968    Inputs.push_back("-");
969  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
970    FrontendOptions::InputKind IK = DashX;
971    if (IK == FrontendOptions::IK_None) {
972      IK = FrontendOptions::getInputKindForExtension(
973        llvm::StringRef(Inputs[i]).rsplit('.').second);
974      // FIXME: Remove this hack.
975      if (i == 0)
976        DashX = IK;
977    }
978    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
979  }
980
981  return DashX;
982}
983
984std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
985                                                 void *MainAddr) {
986  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
987
988  if (!P.isEmpty()) {
989    P.eraseComponent();  // Remove /clang from foo/bin/clang
990    P.eraseComponent();  // Remove /bin   from foo/bin
991
992    // Get foo/lib/clang/<version>/include
993    P.appendComponent("lib");
994    P.appendComponent("clang");
995    P.appendComponent(CLANG_VERSION_STRING);
996  }
997
998  return P.str();
999}
1000
1001static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1002  using namespace cc1options;
1003  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1004  Opts.Verbose = Args.hasArg(OPT_v);
1005  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1006  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1007  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1008
1009  // Add -I... and -F... options in order.
1010  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1011         ie = Args.filtered_end(); it != ie; ++it)
1012    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1013                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1014
1015  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1016  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1017  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1018                                             OPT_iwithprefixbefore),
1019         ie = Args.filtered_end(); it != ie; ++it) {
1020    if (it->getOption().matches(OPT_iprefix))
1021      Prefix = it->getValue(Args);
1022    else if (it->getOption().matches(OPT_iwithprefix))
1023      Opts.AddPath(Prefix.str() + it->getValue(Args),
1024                   frontend::System, false, false);
1025    else
1026      Opts.AddPath(Prefix.str() + it->getValue(Args),
1027                   frontend::Angled, false, false);
1028  }
1029
1030  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1031         ie = Args.filtered_end(); it != ie; ++it)
1032    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1033  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1034         ie = Args.filtered_end(); it != ie; ++it)
1035    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1036  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1037         ie = Args.filtered_end(); it != ie; ++it)
1038    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1039
1040  // FIXME: Need options for the various environment variables!
1041}
1042
1043static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1044                          FrontendOptions::InputKind IK,
1045                          Diagnostic &Diags) {
1046  // FIXME: Cleanup per-file based stuff.
1047
1048  // Set some properties which depend soley on the input kind; it would be nice
1049  // to move these to the language standard, and have the driver resolve the
1050  // input kind + language standard.
1051  if (IK == FrontendOptions::IK_Asm) {
1052    Opts.AsmPreprocessor = 1;
1053  } else if (IK == FrontendOptions::IK_ObjC ||
1054             IK == FrontendOptions::IK_ObjCXX ||
1055             IK == FrontendOptions::IK_PreprocessedObjC ||
1056             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1057    Opts.ObjC1 = Opts.ObjC2 = 1;
1058  }
1059
1060  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1061  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1062    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1063#define LANGSTANDARD(id, name, desc, features) \
1064      .Case(name, LangStandard::lang_##id)
1065#include "clang/Frontend/LangStandards.def"
1066      .Default(LangStandard::lang_unspecified);
1067    if (LangStd == LangStandard::lang_unspecified)
1068      Diags.Report(diag::err_drv_invalid_value)
1069        << A->getAsString(Args) << A->getValue(Args);
1070  }
1071
1072  if (LangStd == LangStandard::lang_unspecified) {
1073    // Based on the base language, pick one.
1074    switch (IK) {
1075    case FrontendOptions::IK_None:
1076    case FrontendOptions::IK_AST:
1077      assert(0 && "Invalid input kind!");
1078    case FrontendOptions::IK_OpenCL:
1079      LangStd = LangStandard::lang_opencl;
1080      break;
1081    case FrontendOptions::IK_Asm:
1082    case FrontendOptions::IK_C:
1083    case FrontendOptions::IK_PreprocessedC:
1084    case FrontendOptions::IK_ObjC:
1085    case FrontendOptions::IK_PreprocessedObjC:
1086      LangStd = LangStandard::lang_gnu99;
1087      break;
1088    case FrontendOptions::IK_CXX:
1089    case FrontendOptions::IK_PreprocessedCXX:
1090    case FrontendOptions::IK_ObjCXX:
1091    case FrontendOptions::IK_PreprocessedObjCXX:
1092      LangStd = LangStandard::lang_gnucxx98;
1093      break;
1094    }
1095  }
1096
1097  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1098  Opts.BCPLComment = Std.hasBCPLComments();
1099  Opts.C99 = Std.isC99();
1100  Opts.CPlusPlus = Std.isCPlusPlus();
1101  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1102  Opts.Digraphs = Std.hasDigraphs();
1103  Opts.GNUMode = Std.isGNUMode();
1104  Opts.GNUInline = !Std.isC99();
1105  Opts.HexFloats = Std.hasHexFloats();
1106  Opts.ImplicitInt = Std.hasImplicitInt();
1107
1108  // OpenCL has some additional defaults.
1109  if (LangStd == LangStandard::lang_opencl) {
1110    Opts.OpenCL = 1;
1111    Opts.AltiVec = 1;
1112    Opts.CXXOperatorNames = 1;
1113    Opts.LaxVectorConversions = 1;
1114  }
1115
1116  // OpenCL and C++ both have bool, true, false keywords.
1117  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1118
1119  if (Opts.CPlusPlus)
1120    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1121
1122  if (Args.hasArg(OPT_fobjc_gc_only))
1123    Opts.setGCMode(LangOptions::GCOnly);
1124  else if (Args.hasArg(OPT_fobjc_gc))
1125    Opts.setGCMode(LangOptions::HybridGC);
1126
1127  if (Args.hasArg(OPT_print_ivar_layout))
1128    Opts.ObjCGCBitmapPrint = 1;
1129
1130  if (Args.hasArg(OPT_faltivec))
1131    Opts.AltiVec = 1;
1132
1133  if (Args.hasArg(OPT_pthread))
1134    Opts.POSIXThreads = 1;
1135
1136  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1137                                        "default");
1138  if (Vis == "default")
1139    Opts.setVisibilityMode(LangOptions::Default);
1140  else if (Vis == "hidden")
1141    Opts.setVisibilityMode(LangOptions::Hidden);
1142  else if (Vis == "protected")
1143    Opts.setVisibilityMode(LangOptions::Protected);
1144  else
1145    Diags.Report(diag::err_drv_invalid_value)
1146      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1147
1148  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1149
1150  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1151  // is specified, or -std is set to a conforming mode.
1152  Opts.Trigraphs = !Opts.GNUMode;
1153  if (Args.hasArg(OPT_trigraphs))
1154    Opts.Trigraphs = 1;
1155
1156  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1157                                   OPT_fno_dollars_in_identifiers,
1158                                   !Opts.AsmPreprocessor);
1159  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1160  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1161  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1162  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1163    Opts.LaxVectorConversions = 0;
1164  if (Args.hasArg(OPT_fno_threadsafe_statics))
1165    Opts.ThreadsafeStatics = 0;
1166  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1167  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1168  Opts.Blocks = Args.hasArg(OPT_fblocks);
1169  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1170  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1171  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1172  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1173  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1174  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1175  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1176  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1177  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1178  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1179                                               Diags);
1180  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1181  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1182                                                 OPT_fconstant_string_class);
1183  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1184  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1185  if (Opts.ObjCNonFragileABI2)
1186    Opts.ObjCNonFragileABI = true;
1187  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1188  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1189  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1190  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1191  Opts.Static = Args.hasArg(OPT_static_define);
1192  Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1193  Opts.OptimizeSize = 0;
1194
1195  // FIXME: Eliminate this dependency.
1196  unsigned Opt =
1197    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1198  Opts.Optimize = Opt != 0;
1199
1200  // This is the __NO_INLINE__ define, which just depends on things like the
1201  // optimization level and -fno-inline, not actually whether the backend has
1202  // inlining enabled.
1203  //
1204  // FIXME: This is affected by other options (-fno-inline).
1205  Opts.NoInline = !Opt;
1206
1207  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1208  switch (SSP) {
1209  default:
1210    Diags.Report(diag::err_drv_invalid_value)
1211      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1212    break;
1213  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1214  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1215  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1216  }
1217}
1218
1219static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1220                                  Diagnostic &Diags) {
1221  using namespace cc1options;
1222  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1223  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1224  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1225      Opts.TokenCache = A->getValue(Args);
1226  else
1227    Opts.TokenCache = Opts.ImplicitPTHInclude;
1228  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1229
1230  // Add macros from the command line.
1231  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1232         ie = Args.filtered_end(); it != ie; ++it) {
1233    if (it->getOption().matches(OPT_D))
1234      Opts.addMacroDef(it->getValue(Args));
1235    else
1236      Opts.addMacroUndef(it->getValue(Args));
1237  }
1238
1239  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1240
1241  // Add the ordered list of -includes.
1242  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1243                                             OPT_include_pth),
1244         ie = Args.filtered_end(); it != ie; ++it) {
1245    // PCH is handled specially, we need to extra the original include path.
1246    if (it->getOption().matches(OPT_include_pch)) {
1247      std::string OriginalFile =
1248        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1249      if (OriginalFile.empty())
1250        continue;
1251
1252      Opts.Includes.push_back(OriginalFile);
1253    } else
1254      Opts.Includes.push_back(it->getValue(Args));
1255  }
1256
1257  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1258         ie = Args.filtered_end(); it != ie; ++it) {
1259    std::pair<llvm::StringRef,llvm::StringRef> Split =
1260      llvm::StringRef(it->getValue(Args)).split(';');
1261
1262    if (Split.second.empty()) {
1263      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1264      continue;
1265    }
1266
1267    Opts.addRemappedFile(Split.first, Split.second);
1268  }
1269}
1270
1271static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1272                                        ArgList &Args) {
1273  using namespace cc1options;
1274  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1275  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1276  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1277  Opts.ShowComments = Args.hasArg(OPT_C);
1278  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1279}
1280
1281static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1282  using namespace cc1options;
1283  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1284  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1285  Opts.Triple = getLastArgValue(Args, OPT_triple);
1286  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1287
1288  // Use the host triple if unspecified.
1289  if (Opts.Triple.empty())
1290    Opts.Triple = llvm::sys::getHostTriple();
1291}
1292
1293//
1294
1295void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1296                                        const char **ArgBegin,
1297                                        const char **ArgEnd,
1298                                        Diagnostic &Diags) {
1299  // Parse the arguments.
1300  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1301  unsigned MissingArgIndex, MissingArgCount;
1302  llvm::OwningPtr<InputArgList> Args(
1303    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1304
1305  // Check for missing argument error.
1306  if (MissingArgCount)
1307    Diags.Report(diag::err_drv_missing_argument)
1308      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1309
1310  // Issue errors on unknown arguments.
1311  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1312         ie = Args->filtered_end(); it != ie; ++it)
1313    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1314
1315  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1316  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1317  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1318  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1319  FrontendOptions::InputKind DashX =
1320    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1321  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1322  if (DashX != FrontendOptions::IK_AST)
1323    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1324  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1325  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1326  ParseTargetArgs(Res.getTargetOpts(), *Args);
1327}
1328